8.25. Componer

8.25. Componer
	8. El menú “Colores”

8.25.1. Generalidades

Figura 16.178. Ejemplo para el filtro “Componer”

Imagen descompuesta (descompuesta en RGB)

“Componer” aplicado

This command constructs an image from several grayscale images or layers, for instance from extracted RGB, HSV, etc. components. You can also build an image from grayscale images or layers created independently.

8.25.2. Activating the Command

You can access this command from the main menu through Colors → Components → Compose…. It is enabled if your image is grayscale.

8.25.3. Opciones

Figura 16.179. Opciones del filtro “Componer”

Componer canales

Here you can select the color space to be used: RGB, HSV, etc. The available options are described in the Decompose command.

Representación del canal

Allows you to select which layer or image will be used for each channel. You may use this option, for example, to exchange color channels:

Figura 16.180. Ejemplo de representación de canales: intercambio de dos canales

Imagen original

Descompuesto a capas

Composed image after using Channel Representation to switch red and green channels

Valor de máscara: En lugar de seleccionar una capa o una imagen para crear el canal, se puede dar un valor al canal entre 0 y 255. Pero tenga en cuenta que al menos un canal debe estar formado por una imagen o capa.

	Sugerencia
	If you use different settings in Compose than when you used Decompose, for instance an image decomposed to RGB then re-composed to LAB, you will get interesting color effects. Test it!